UL-1255-02 | Cosworth YB Exhaust Valve Guide (8mm Bore)

• Copper Nickel Silicon Alloy – Colsibro
• For Cosworth YB Exhaust with 8mm Guide
• Outer diameter: 13.03mm
• Bore: 8mm
• Weight: 28g
• Compatible stem seals: UL-1406-01

The difference between Inlet and Exhaust guides, other than bore size, is the nose profile. We also have 7mm bore exhaust valves (UL-1447-01) and 6mm inlet and exhaust guides please contact us for further information and/or you wish to order.